I think Bore stole 90MN from government tender kickback... to clean up gave Muriu 90MN in cash while Muriu was to give him the house,The deal was that when the bank processes and pays Muriu the 90MN cost of the house, Muriu was to send the 90MN cash or part of it back to Bore...Muriu felt fucked up and demanded 120MN because he knew the CS Bore is a thief...Muriu wanted a bigger share...He then went into hiding while bore took over the house...he invited the media to ensure Bore would not assasinate him or his family.
So in short Bore was trying to clean up stolen money through a bank loan after making a cash settlement with Muriu..very stupid.